ElmoMC SimplIQ Digital Servo Drives-Guitar Evaluation Board User Guide - Manual (Page 68)

Whistle, Bell Guitar Evaluation Board User Guide Combined Evaluation Board
MAN-EVLBRD-WHI-BEL-GUI (Ver. 1.401)
68
.16 Communications
The communication cables use an 8-pin RJ-45 plug that connects to the RS-232 and
CANopen ports on the Evaluation Board.
The communication interface may differ according to the user’s hardware. The Evaluation
Board can communicate using the following options:
a. RS-232, full duplex
b. CANopen
RS-232 communication requires a standard, commercial 3-core null-modem cable
connected from the Evaluation Board to a serial interface on the PC. The interface is
selected and set up in the Composer software.
In order to benefit from CANopen communication, the user must have an understanding
of the basic programming and timing issues of a CANopen network.
For ease of setup and diagnostics of CAN communication, RS-232 and CANopen can be
used simultaneously.
.16.1 RS-232 Communication
Notes for connecting the RS-232 communication cable:
 Connect the shield to the ground of the host (PC). Usually, this connection is
soldered internally inside the connector at the PC end. You can use the drain wire to
facilitate connection.
 The Evaluation Board’s RS-232 communications port is non-isolated.
 The male RJ plug must have a shield cover.
 Ensure that the shield of the cable is connected to the shield of the RJ plug. The drain
wire can be used to facilitate the connection.

Pin Signal Function Pin Location
1 — —
2 — —
3 Tx RS-232 transmit
4 — —
5 COMRET Communication return
6 Rx RS-232 receive
7 — —
RS-232